Re: [yocto] Custom DISTRO_VERSION with git describe

[<Mikko.Rapeli@bmw.de>]

Hi,

On Thu, Apr 28, 2022 at 01:04:22PM +0200, Ayoub Zaki via lists.yoctoproject.org wrote:
> hello,
> 
> 
> I would like to have a custom DISTRO_VERSION based on "git describe" of my
> layer:
> 
> 
> 1) In my layer meta-mylayer/conf/layer.conf, I defined the following:
> 
> # Set variable to get the location of the layer
> > MY_LAYER_BASE := '${LAYERDIR}'
> 
> 
> 
> 2) I created a my_distro_version.bbclass with following:
> 
> def my_distro_version(d):
> >     import subprocess
> >     project_path = d.getVar('MY_LAYER_BASE', True)
> >     cmd = "git describe --tags"

I would also add --always and --dirty to be sure non-tagged clones
of repo work and builds with local modifications get marked as such.

> >     proc = subprocess.Popen(cmd, stdout=subprocess.PIPE, shell=True,
> > cwd=project_path)
> >     out, err =  proc.communicate()
> >     return out.decode("utf-8").rstrip()
> 
> 
> 3)  Then I inherited it my  meta-mylayer/conf/distro/my_distro.conf :
> 
> INHERIT += "my_distro_version"
> > DISTRO_VERSION = "${@my_distro_version(d)}"

DISTRO_VERSION := "${@my_distro_version(d)}"

That should do it :)

Cheers,

-Mikko